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dmaengine: ste_dma40: fix error return code in d40_probe() 

In many of the error handling case, the return value 'ret' not set
and 0 will be return from d40_probe() even if error, but we should
return a negative error code instead in those error handling case.
This patch fixed them, and also removed useless variable 'err'.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Wei Yongjun 2013-05-31 09:50:07 +08:00 committed by Linus Walleij
parent 499c2bc3cc
commit 8581bbcd30
1 changed files with 7 additions and 7 deletions
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14
drivers/dma/ste_dma40.c
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@ -3535,7 +3535,6 @@ static int __init d40_probe(struct platform_device *pdev)
{
struct stedma40_platform_data *plat_data = pdev->dev.platform_data;
struct device_node *np = pdev->dev.of_node;
int err;
int ret = -ENOENT;
struct d40_base *base = NULL;
struct resource *res = NULL;
@ -3647,6 +3646,7 @@ static int __init d40_probe(struct platform_device *pdev)
base->lcpa_regulator = regulator_get(base->dev, "lcla_esram");
if (IS_ERR(base->lcpa_regulator)) {
d40_err(&pdev->dev, "Failed to get lcpa_regulator\n");
ret = PTR_ERR(base->lcpa_regulator);
base->lcpa_regulator = NULL;
goto failure;
}
@ -3662,13 +3662,13 @@ static int __init d40_probe(struct platform_device *pdev)
}
base->initialized = true;
err = d40_dmaengine_init(base, num_reserved_chans);
if (err)
ret = d40_dmaengine_init(base, num_reserved_chans);
if (ret)
goto failure;
base->dev->dma_parms = &base->dma_parms;
err = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE);
if (err) {
ret = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE);
if (ret) {
d40_err(&pdev->dev, "Failed to set dma max seg size\n");
goto failure;
}
@ -3676,8 +3676,8 @@ static int __init d40_probe(struct platform_device *pdev)
d40_hw_init(base);
if (np) {
err = of_dma_controller_register(np, d40_xlate, NULL);
if (err && err != -ENODEV)
ret = of_dma_controller_register(np, d40_xlate, NULL);
if (ret)
dev_err(&pdev->dev,
"could not register of_dma_controller\n");
}